Method and system for irrigation and fertilizer application for crop in arid area on basis of same-day weather forecast information

Abstract

Embodiments of the invention disclose a method and system for irrigation and fertilizer application for a crop in an arid area on the basis of same-day weather forecast information. The method comprises the following steps: acquiring the same-day weather forecast information in a target irrigation area, and obtaining the evapotranspiration amount of the crop in a reference day according to the weather forecast information; acquiring the accumulated actual evapotranspiration amount of the crop according to the evapotranspiration amount of the crop in the same reference day; acquiring the soil bulk density and soil field water-retaining amount of the target irrigation area through a cutting-ring method, and calculating a soil field water storage amount according to the acquired soil bulk density and soil field water-retaining amount; acquiring a soil water storage difference according to the accumulated actual evapotranspiration amount of the crop and an accumulated rainfall amount; anddeciding the amount of irrigation on the basis of a pre-set irrigation judgment coefficient, the soil field water storage amount and the soil water storage difference. By application of the method andthe system provided by the invention, problems encountered in water-fertilizer decision by utilization of a sensor technology can be avoided.

Description

technical field [0001] The invention relates to agricultural irrigation and fertilization technology, in particular to a method and system for crop irrigation and fertilization in arid regions based on weather forecast information of the day. Background technique [0002] Irrigation and fertilization are important field management measures for agricultural production in dry areas, and play a vital role in crop growth and yield. At present, the irrigation decision-making of my country's farmland production is mainly based on the experience of farmers, and the experience-based irrigation decision-making method, on the one hand, has a large blindness and randomness of irrigation, serious waste of water resources, and low efficiency of irrigation water utilization; The water shortage problem in my country is serious, and the annual water shortage in the irrigated area alone is 30 billion m 3 , the coexistence of water shortage in agricultural production and waste of irrigation w...

AI Technical Summary

Problems solved by technology

[0006] 3) Increase extra labor: Although the sensor has the characteristics of low human impact on the environment during use, it is necessary to re-arrange the sensor when the crop is changed from crop to season;

[0007] 4) Cost price: the number of sensor layout directly affects the cost of use, and the wiring is cumbersome, while the price of wireless sensors is relatively expensive;

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